Its his pal shill bidding, or he has a 2nd account to shill bid it himself.
Judging by the fact that the idiot has left feedback twice for the same buyer before, and can be seen by anyone, i guess he's not too bright. It also means he's paid ebay fees twice already, unless he cancelled both previous auctions
Trouble is with reporting this, the drop down boxes ebay provide dont fully list the option to explain things. There used to be a comment box where you could detail the problem, but now its generic and i dont see any of the right options